http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2674198-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aeb4f2693fa966f781c7acd4269720ef |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C3-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-16 |
| filingDate | 2017-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35026486a46be7fdf860295022d5a63f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f076302a3c3db59f8d3144a1e6c3804 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee1c7bdd31e0d089c650d5043294a983 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f37b5d30a516e024dc1e17aad9cf6a77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b02d0bd43cc7fd37834913645e510c4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f732e9d7f7e180835769ba93887cc94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3d3c2c7b67714701a2e0dbeb55dd144 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_549f1bf0491c50a662c678621f234197 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49724e1430645f523c89fdd100f2feee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64e2dd351ed565d06a10f6808a384e9b |
| publicationDate | 2018-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2674198-C1 |
| titleOfInvention | Method of preparation of cellulose for nitration |
| abstract | FIELD: chemical industry.SUBSTANCE: invention relates to the production of cellulose for chemical processing and can be used in the pulp and paper industry. Process for the production of cellulose for nitration, comprising acidifying a cellulose-containing raw material with a sulphite cooking liquor, neutralization of the spent acid brewing solution with the spent alkaline solution, hot refining of the sodium hydroxide cooking product and subsequent multistage bleaching, as an alkaline solution to neutralize the spent acidic cooking liquor use a mixture of spent alkaline solution from the previous stage of peroxide bleaching and desalinizing agent, taken in the amount of 0.015–0.020 % of the mass of the as. fibers, while the product is cooked for 20–30 minutes at a temperature of 70–80 °C, after this, the spent solution is removed for neutralization and hot refinement is carried out with sodium hydroxide in the presence of a desiccator, taken in an amount of 0.010–0.015 % by weight of the fibers. As a desalinator, a mixture containing anionic, non-ionic and amphoteric surfactant components, as well as a salt or salts from the group, including phosphates and sodium carbonates, disilicate and sodium sulfate. Refinement of the cooking product is carried out at a temperature of 95–99 °C, the duration of 40–60 minutes and the consumption of sodium hydroxide 4.0–4.5 % to the mass of absolutely dry fiber.EFFECT: process for the production of cellulose for nitration, comprising acidifying a pulp containing a raw material with a sulphite cooking liquor, neutralization of the spent acid cooking liquor with the spent alkaline solution, hot refinement of the sodium hydroxide cooking product and subsequent multi-stage bleaching.3 cl, 1 tbl |
| priorityDate | 2017-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.